Nvkvm Pv

Run CUDA, PyTorch, Vulkan or a graphical display inside a KVM guest, on the same GPU your host is still using.

Get the actual GPU accelerated display in the VM on your desktop - zero copy native, no PCIe round trips when not needed.

Run QEMU in a container for additional isolation and environment consistency.

This project is both intended for compute workload VMs (e.g deep learning) and for graphics VMs (e.g gaming)

Without /dev/kvm , QEMU silently falls back to software emulation: it appears to work and is unusably slow. Permissions, containers and nested virt can be found here: install guide .

Keep the 127.0.0.1: in the -p flag. The guest is ubuntu:ubuntu with NOPASSWD:ALL ; published as a bare -p 2222:2222 it is a root shell with your GPU attached, offered to your whole network.

NVIDIA_DRIVER_CAPABILITIES is not optional decoration: --gpus all alone gives the container compute,utility , and the guest then gets a compute-only driver with no GL or Vulkan — which does not fail, it silently falls back to llvmpipe.

A prebuilt tarball runs on a bare host, and bash scripts/build_qemu.sh --install-deps builds from source.